# Scrapy settings for images3600429 project
#
# For simplicity, this file contains only settings considered important or
# commonly used. You can find more settings consulting the documentation:
#
#     https://docs.scrapy.org/en/latest/topics/settings.html
#     https://docs.scrapy.org/en/latest/topics/downloader-middleware.html
#     https://docs.scrapy.org/en/latest/topics/spider-middleware.html

BOT_NAME = 'images3600429'

SPIDER_MODULES = ['images3600429.spiders']
NEWSPIDER_MODULE = 'images3600429.spiders'

# Crawl responsibly by identifying yourself (and your website) on the user-agent
# USER_AGENT = 'images3600429 (+http://www.yourdomain.com)'

# Obey robots.txt rules 是否遵守网站的robots.txt
ROBOTSTXT_OBEY = False

# Configure maximum concurrent requests performed by Scrapy (default: 16)
# CONCURRENT_REQUESTS = 32

# Configure a delay for requests for the same website (default: 0)
# See https://docs.scrapy.org/en/latest/topics/settings.html#download-delay
# See also autothrottle settings and docs
# DOWNLOAD_DELAY = 3
# The download delay setting will honor only one of:
# CONCURRENT_REQUESTS_PER_DOMAIN = 16
# CONCURRENT_REQUESTS_PER_IP = 16

# Disable cookies (enabled by default)
# COOKIES_ENABLED = False

# Disable Telnet Console (enabled by default)
# TELNETCONSOLE_ENABLED = False

# Override the default request headers:
# DEFAULT_REQUEST_HEADERS = {
#   'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
#   'Accept-Language': 'en',
# }

# Enable or disable spider middlewares
# See https://docs.scrapy.org/en/latest/topics/spider-middleware.html
# SPIDER_MIDDLEWARES = {
#    'images3600429.middlewares.Images3600429SpiderMiddleware': 543,
# }

# Enable or disable downloader middlewares
# See https://docs.scrapy.org/en/latest/topics/downloader-middleware.html
# DOWNLOADER_MIDDLEWARES = {
#    'images3600429.middlewares.Images3600429DownloaderMiddleware': 543,
# }

# Enable or disable extensions
# See https://docs.scrapy.org/en/latest/topics/extensions.html
# EXTENSIONS = {
#    'scrapy.extensions.telnet.TelnetConsole': None,
# }

# Configure item pipelines
# See https://docs.scrapy.org/en/latest/topics/item-pipeline.html
# ITEM_PIPELINES = {
#    'images3600429.pipelines.Images3600429Pipeline': 300,
# }

# 启用pipline，设置优先级
ITEM_PIPELINES = {
    'images3600429.pipelines.ImagePipeline': 300,
    'images3600429.pipelines.MongoPipeline': 301,
    'images3600429.pipelines.MysqlPipeline': 302,  # mysql数据库有bug，待处理
}

# Enable and configure the AutoThrottle extension (disabled by default)
# See https://docs.scrapy.org/en/latest/topics/autothrottle.html
# AUTOTHROTTLE_ENABLED = True
# The initial download delay
# AUTOTHROTTLE_START_DELAY = 5
# The maximum download delay to be set in case of high latencies
# AUTOTHROTTLE_MAX_DELAY = 60
# The average number of requests Scrapy should be sending in parallel to
# each remote server
# AUTOTHROTTLE_TARGET_CONCURRENCY = 1.0
# Enable showing throttling stats for every response received:
# AUTOTHROTTLE_DEBUG = False

# Enable and configure HTTP caching (disabled by default)
# See https://docs.scrapy.org/en/latest/topics/downloader-middleware.html#httpcache-middleware-settings
# HTTPCACHE_ENABLED = True
# HTTPCACHE_EXPIRATION_SECS = 0
# HTTPCACHE_DIR = 'httpcache'
# HTTPCACHE_IGNORE_HTTP_CODES = []
# HTTPCACHE_STORAGE = 'scrapy.extensions.httpcache.FilesystemCacheStorage'

# images爬虫的设置如下
MAX_PAGE = 2  # 要抓取的页数
# ----数据库设置_MongoDB----
MONGO_URI = '127.0.0.1'
MONGO_DB = 'images360'

# ----数据库设置_mysql----
# mysql得提前创建数据库
"""
CREATE DATABASE images360 DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci;

CREATE TABLE images360.images (id VARCHAR(255) NOT NULL PRIMARY KEY,url VARCHAR(255) NULL,title VARCHAR(255) NULL,thumb VARCHAR(255) NULL)
"""
MYSQL_HOST = 'localhost'
MYSQL_DATABASE = 'images360'
MYSQL_PORT = 3306
MYSQL_USER = 'root'
MYSQL_PASSWORD = '123456'

# ----下载图片----
IMAGES_STORE = './images'
